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frutty [35]
2 years ago
5

I need know what is x .

Mathematics
2 answers:
lys-0071 [83]2 years ago
7 0

Answer:

21 x +6 =90⁰( Alternate exterior angles)

=) 21x =84

=) x =84/21 = 4

irina [24]2 years ago
3 0

Answer:

x is 4

Step-by-step explanation:

21x+6 = 90

21x=84

x=4

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Perpendicular lines intersect to form four right angles. never always sometimes
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Answer:

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Step-by-step explanation:

The definition of a perpendicular line is that it intersects another at a 90 degree angle. Using this, by verticals, the opposite corner angle must also be 90-degrees, and since one side of a line is 180 degrees, 180-90 = 90, which ensure the rest of the angles will be 90 degrees too.

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Step-by-step explanation:

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2 years ago
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A photocopier increased the sides of a square in the ratio 4:5.
Svetach [21]

Answer:

The sides are increased by a percentage of 25%

Step-by-step explanation:

Let

x -----> the length side of the original square

y ----> the length side of the increased square

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the increase is calculated by subtracting x from y

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The sides are increased by a percentage of 25%

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